Delta City, Mississippi has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.4 °C (low) to 23.9 °C (high). Annual precipitation averages 1482.1 Millimeters. Delta City is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.8 °C | 12.1 °C | 146.81 mm |
| February | 3.7 °C | 14.6 °C | 133.6 mm |
| March | 7.7 °C | 19.2 °C | 136.91 mm |
| April | 12.3 °C | 24.3 °C | 164.08 mm |
| May | 17.4 °C | 28.6 °C | 121.16 mm |
| June | 21.2 °C | 32.2 °C | 96.77 mm |
| July | 22.6 °C | 33.6 °C | 105.41 mm |
| August | 21.8 °C | 33.6 °C | 99.82 mm |
| September | 18.3 °C | 31.1 °C | 95 mm |
| October | 11.9 °C | 25.6 °C | 116.08 mm |
| November | 6.4 °C | 18.7 °C | 120.4 mm |
| December | 3.2 °C | 13.6 °C | 146.05 mm |
| Annual | 12.4 °C | 23.9 °C | 1482.09 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |